Botany-Ecosystem Components
NEET Botany Ecosystem Components MCQ Question
Type: MCQ-numerical-Easy-Class 12
If the Gross Primary Productivity (GPP) of an ecosystem is 5000 kcal m – 2 yr –1 and the respiration losses (R) are 2000 kcal m – 2 yr –1, what is the Net Primary Productivity (NPP) of this ecosystem?
A
3000 kcal m – 2 yr –1
B
7000 kcal m – 2 yr –1
C
5000 kcal m – 2 yr –1
D
2000 kcal m – 2 yr –1
Correct Answer
Option A
Detailed Explanation
Net primary productivity (NPP) is calculated as Gross Primary Productivity (GPP) minus respiration losses (R). Here, NPP = 5000 - 2000 = 3000 kcal m – 2 yr –1.
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